12310012805 has 4 divisors (see below), whose sum is σ = 14772015372. Its totient is φ = 9848010240.

The previous prime is 12310012769. The next prime is 12310012907. The reversal of 12310012805 is 50821001321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50821001321 = 71 ⋅715788751.

It can be written as a sum of positive squares in 2 ways, for example, as 2078083396 + 10231929409 = 45586^2 + 101153^2 .

It is not a de Polignac number, because 12310012805 - 2¹⁰ = 12310011781 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1231001276 + ... + 1231001285.

It is an arithmetic number, because the mean of its divisors is an integer number (3693003843).

Almost surely, 2^12310012805 is an apocalyptic number.

It is an amenable number.

12310012805 is a deficient number, since it is larger than the sum of its proper divisors (2462002567).

12310012805 is an equidigital number, since it uses as much as digits as its factorization.

12310012805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462002566.

The product of its (nonzero) digits is 480, while the sum is 23.

The spelling of 12310012805 in words is "twelve billion, three hundred ten million, twelve thousand, eight hundred five".